Seal for sealing and automatically cleaning a sheathed element o

Details Seal for sealing and automatically cleaning a sheathed element o Seal for sealing and automatically cleaning a sheathed element o

1996-05-30

1998-07-21

Walberg, Teresa J.

Electric heating

Heating devices

Resistive element: igniter type

219270, 219257, 338238, 338240, F23Q 732

Patent

active

057838011

ABSTRACT:
A sheathed element for a heater plug for diesel engines includes a hollow metal sheath that is open at one end, has a closed opposite end, and defines a cavity. A heating element is positioned in the cavity and the cavity is filled with insulating powder. An elastomeric seal is positioned in the open end of the sheath. The seal has an annular projection that projects from a surface of the seal and establishes a sealing contact with a respective seat of the sheath so that, when the seal is inserted into the seat, the projection removes particles present on an internal wall of the seat.

REFERENCES:
patent: 2617001 (1952-11-01), Hasley
patent: 4314401 (1982-02-01), Saku
patent: 4636614 (1987-01-01), Itoh
patent: 4963717 (1990-10-01), Woelfle

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